static public void ShowYesNoPopup(string title, string msg, System.Action <string> yesNoCallback)
{
if (null == uiPopup)
{
Init();
}
GameObject go = uiPopup.CreateYesNoPopupSlot();
UIYesNoPopupSlot yesNoPopupSlot = go.GetComponent <UIYesNoPopupSlot>();
yesNoPopupSlot.onYesNo += yesNoCallback;
yesNoPopupSlot.SetMsg(title, msg);
go.SetActive(true);
}